US863203A - Hoisting apparatus. - Google Patents

Description

No. 863,203. PATENTED AUG. 13, 1907.

L. MOSS.

HOIS'I'ING APPARATUS. Arrmoumn num rnn. 4. 1904.

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No. 863,203. PATENTED AUG. 13, 1907.

L. MOSS. HOISTING APPARATUS.

APPLICATION IILBD FBBA. 1904.

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LINCOLN MOSS, OF NEW YORK, N. Y.

HoIs'rING APPARATUS. f f

Specification of Letters Patent. i

Patented Aug. 13, 1907.

Application tiled February 4, 1904, Serial No. 191,926.

To all whom 'it may concern:

Be it known that I,` LINCOLN Moss, of New York, N. Y., (post-office address 62 Madison avenue, borough of Manhattan, city of New York,) have invented certain new and useful Improvements in Hoisting Apparatus, of which the following is a specification, illustrated by drawings.

This invention relates to hoisting apparatus of the class in which clam-shell or other buckets or carriers are employed and in which the carrier requires a motion of translation, as a hoisting motion, and also an internal motion or a motion oi'the parts of the carrier to close and open the carrier, the two motions being `controlled by two or more ropes or chains or other power-trans` mitting devices;

The invention consists of certain features of construction and combinations of parts to be hereinafter described and then claimed, with reference to the accompanying drawings, which show the invention ap-Vv plied to a traveling bridge. ry In the main the invention comprehends means for balancing the ropes, chains or other power-transmitting devices which are used for the purposes stated, so that there is no tendency for the carrier to move in either direction, and so that when the parts of the carrier are operated there is no tendency for the carrier to shift its position when power is appliedvor such operation.

Figure lis a perspective view partly diagrammatic, showing apparatus embodying the invention; Fig. 2 is a detail diagrammatic perspective View of the ropes.

Referring to the drawings, the bucket or carrier a is designed to deposit its load into a hopper b, which, together with the carrier, is supported on the frame- Work of a bridge c, which is carried by trucks d d that preferably travel on rails e e. The bridge is provided with tracks or guide-rails f for the trolley or carriage g equipped with an electric motor h. The trolley or carriage g is provided with rollers i, one at least'of which is driven from gears j connected with the motor h. The motor on the trolley is preferably supplied with current through wires, not shown, which are connected with a controller y that maybe supported on a platform, as indicatedby dotted lines, which platform may be used by the operator. The clam-shell or other bucket or carrier is supported by means of suspending ropes, chains or cables k which are attached to the head or bucket bail a/ and the jaws or operating parts of the bucket or carrier are controlled through the medium of ropes, chains. or cables l connected with the cylindrical surface of a drum m. The ropes k l are each in reality a doubled single rope, each rope being reeved through suitably arranged sheaves or pulleys, to be hereinafter described.

Pulleys l l suitably supported on the trolley or carriage g conduct the two ends or laps of the rope,

chain or cable l in opposite directions, one lap being reeved over the pulley l2 at one end of the frame-work of the bridge and conducted past the trolley or cai-risul` tothe other' end of the frame-work, where it is rer-ved over pulleys l* and is conducted in reversed direction over a pulley Z5, thence the other lap or end of the rope, chain or cableis conducted over pulleys Zflo the appropriate one of the aforesaid pulleys l. The pulley ls serves as an equalizer for equalizing -the stresses in either direction with respect to the trolley or carriage, no matter what may be the position of translation o1' the carriage with respect to the ends ol the bridge.

.The vmanner of conducting the rope, chain or cable l balances the stresses in either direction with respect,

v to the trolley or carriage g. No matter what may be the position of the latter, the rope Z will have no effect in changing thisposition. y

The rope, chain or cable 1:,which supports the bucket or other carrier and the ends of which are attached to a bail a', is conducted, or rather, itstwo laps or ends are the other lap orend of the rope, chain or cable. beingv thence conducted over pulleys k3, whence it iseonducted over the appropriate pulley lic/ A ram or hydraulic cylinder n is suitably supported on the frame-work of one end of the bridge in horizontal position, its plunger rod n supporting the before-described equalizing pulley l5. Adjacent to and parallel with the ram or hydraulic cylinder n is a second ram or hydraulic cylinder o, the plunger rod o of which supports the -before-described equalizing pulley k. These rams n-,o are operated by suitable fluid admitted to act on `the plunger heads within them for the purpose of reciprocating the plunger rods and imparting corresponding movements to the equalizing pulleys carried by them. Itis evident that when reciprocat- -ing movement is imparted to the plunger rod n in one direction, it acts on the drum mto close the bucket' or can-ier, and when reciprocating movement is imparted in the other direction slack on the rope Zoccurs, thus permitting the parts of the carrier to open by gravity. Similarly, the rope k is operated for the purpose of raising or loweringvthe bucket or carrier so that, whether the bucket be in one or the other elevated position,4 or whether the parts thereof be opened or closed in any position, the stressesV will be balanced.

For the purpose of supplying a substantially` constant maximum hydraulic pressure for operating the cylinders or rams without necessitating a continual stopping and starting of the motive power, I prefer to employ a constantly running motor, such for instance, as an electric motor p, which is provided with a controller p and a master switch p2 for the controller, a centrifugal pump q being employed to be actuated by the motor. Thus the pressure produced by the pump, disregarding frictional resistance, will be almost constant within the working limits of the apparatus and the system will be self-regulating to the extent that the pump and motor can operate continuously, even though no water is flowing through the pump. The tank r supplies Water through a pipe q to the pump, while a discharge pipe q2 conducts water to an accumulator s containing some air or fluid and which is preferably employed to prevent shocks on the apparatus. The accumulator s is preferably connected by means of a pipe s with a pressure-actuated regulator s2 for the motor controller p for evident reasons. From the accumulator s the main supply pipe t for the rams or hydraulic cylinders leads, such pipe being provided with branches t t2, of which branch t is connected with the valve box of the ram n, While branch tL is connected with the valve box of the ram o. The valve stem u, for the valve of the ram n is controlled by a hand lever or its equivalent u suitably connected therewith, While the valve stem v-for the valve of the ram o is operable by a suitable hand lever 'v'. In practice it is preferable to employ pilot-valves interposed between the vmain valves and the operating levers. x indicates the discharge pipe leading from the rams or hydraulic cylinders uf, the same discharging into the tank r, which is preferably covered.

The rope, chain or cable l may be termed the closing rope and the rope k-the tripping or dumping rope, for the reason that when there is slack in the rope lc the rope l, acting through the drum m, will close the parts of the carrier a, whereas, when there is slack in the rope l and the rope k is drawn taut, the parts of the carrier are opened. The ropes 1c and Z may both be used in raising or lowering the lcarrier containing material, or the rope l may alone be used.

It will be' observed that the trolley or carriage g in its motion to and fro does not affect the height of the bucket so that the bucket may be hoisted to a fixed point, no matter-where it is, and makes it possible to stop the liftingmachinery at a fixed' point by any suitable automatic mechanism used for that purpose. Under-this invention it is also possible to run the trolley or carriage at a greater speed than heretofore.

The .trolley orcarriage may be moved either by the motor geared to its Wheels or rollers, as shown, or it may be hauled in and out in any other suitable manner.

In'the form of the invention shown it will be seen that itcomprises kinetic or dynamic means for snpply The subject matter of this application forms part o1' l the subject matter disclosed in my application led on the fourth day of February, 1904 Serial No. 191,925 which application contains generic claims covering the present invention and certain specific improvements not claimable herein.

Having thus described my invention and Without limiting myself to details or enumerating equivalents, what I claim as new and desire to secure by Letters Patent is:

1. In combination with a clam-shell bucket or other carrier, doubled ropes or tension devices for giving it motion of translation in a vertical direction and operating its parts, means for balancing the tension of the ropes or tension devices at both sides of said carrier, a trolley or carriage from which the said ropes s uspend the carrier, and hydraulic cylinders and pulleys acting upon loops or bights of said ropes, for substantially the purposes s et forth.

2. In combination with a clamshell bucket or other carrier, doubled ropes or tension devices for giving it motion of translation in a vertical direction and' operating its parts, means for balancing the tension of the ropes or tension devices at both sides of said carrier, a trolley or carringe from which the said ropes suspend the said carrier, rams or hydraulic cylinders ,acting upon the loops or bights of saldropes, and independent means for actuating said trolley, for substantially the purposes set forth.

3. In hoisting apparatus, the combination with a selfclosing bucket, of a doubled rope for imparting vertical movement to snid bucket and balanced on both sides, a doubled rope for operating the parts of the bucket and also balanced on both sides, and operating devices engaging the loops of `said ropes, for substantially the purposes set forth.

4. In hoisting apparatus, the combination with a clamshell or other self-closing bucket, of a doubled rope havin;7 Y

both ends attached to the bucket for hoisting the bucket.

. pulleys for guiding the two lends of the rope in opposite directions from the bucket, a second doubled rope having its ends secured to the bucket for operating the parts of the bucket. pulleysguiding the leads or runs of the second rope in opposite directions from the bucket, sheaves engaginl,r the biglats or loops of said doubled ropes, and means for applyingr power to said sheaves, for substantially the purposes set forth. V

In testimony whereof I. have signed this specification in the presence of two subscribing witnesses.

, LINCOLN MOSS. Witnesses:

EMIL Crus. Eene, C. M. ALLEN.

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